Grimm's Eve couldn't care less about Nick. She has bigger fish to fry.

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Juliette (Bitsie Tulloch) is back, but she's not quite the out of control hexenbiest we used to know. Cold, calculating, and expertly trained, Hadrian Wall's secret weapon will have transitioned into an entirely new person by time Nick (David Giuntoli) meets up with her in "Eve of Destruction."

"Eve doesn't care. She doesn't want to think about Nick in a romantic way. To her, Juliette is like another person altogether. Someone who died," Tulloch explained, according to TV Insider. "But Eve does not view Nick as hers anymore. She doesn't want him in her life. He' s old news!"

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In other words, take Juliette, minus the emotional attachments, and add in a whole new set of hexenbiest powers. Whereas Juliette's morph was a whiplash-inducing nightmare, Eve's is as smooth as a well-oiled lock.

"Juliette was completely out of control in her Hexenbiest mode and Hadrian's Wall got wind of her incredible power," Tulloch said. "They're thinking, "If we could break her and train her, she'd be a massive asset for us!'"

Now that that's what's happened, Nick and Eve's meeting should be particularly interesting.

Find out more when Grimm returns tonight at 9 p.m. ET on NBC.

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